4 papers
Properties and redshift evolution of star-forming galaxies with high [OIII]/[OII] ratios with MUSE at 0.28<z<0.85
M. Paalvast, A. Verhamme, L. A. Straka +21
We present a study of the [OIII]5007/[OII]3727 (O32) ratios of star-forming galaxies drawn from MUSE data spanning a redshift range 0.28<z<0.85. Recently discovered Lyman continuum…
Flickering AGN can explain the strong circumgalactic O VI observed by COS-Halos
Benjamin D. Oppenheimer, Marijke Segers, Joop Schaye +2
Proximity zone fossils (PZFs) are ionization signatures around recently active galactic nuclei (AGN) where metal species in the circumgalactic medium remain over-ionized after the…
Metals in the circumgalactic medium are out of ionization equilibrium due to fluctuating active galactic nuclei
Marijke C. Segers, Benjamin D. Oppenheimer, Joop Schaye +1
We study the effect of a fluctuating active galactic nucleus (AGN) on the abundance of circumgalactic OVI in galaxies selected from the EAGLE simulations. We follow the time-variab…
The origin of the -enhancement of massive galaxies
Marijke C. Segers, Joop Schaye, Richard G. Bower +3
We study the origin of the stellar -element-to-iron abundance ratio, , of present-day central galaxies, using cosmological, hydrodynamical simulations fr…